ColorMagic

ColorMagic creates color palettes from a mood, brand name or keyword you type, from a hex code, or from an uploaded photo. It is a free tool for designers, developers and anyone choosing colors for a website, brand or room.

Alongside palette generation there is a random color picker, a color mixer, a WCAG contrast checker, a color name finder, a CSS gradient generator and a tool that turns photos into coloring-book line art. Palettes can be browsed by trend, popularity, tag, color or collection, such as website, brand and dark-mode sets.

Learning pages explain color theory and show tints and shades for dozens of colors, and a Colors API lets developers generate palettes from their own code. The site says more than 4 million palettes have been created.